| /* Debug counter for debugging support |
| Copyright (C) 2006-2017 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. |
| |
| See dbgcnt.def for usage information. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "diagnostic-core.h" |
| #include "dumpfile.h" |
| |
| #include "dbgcnt.h" |
| |
| struct string2counter_map { |
| const char *name; |
| enum debug_counter counter; |
| }; |
| |
| #define DEBUG_COUNTER(a) { #a , a }, |
| |
| static struct string2counter_map map[debug_counter_number_of_counters] = |
| { |
| #include "dbgcnt.def" |
| }; |
| #undef DEBUG_COUNTER |
| |
| #define DEBUG_COUNTER(a) UINT_MAX, |
| static unsigned int limit[debug_counter_number_of_counters] = |
| { |
| #include "dbgcnt.def" |
| }; |
| #undef DEBUG_COUNTER |
| |
| static unsigned int count[debug_counter_number_of_counters]; |
| |
| bool |
| dbg_cnt_is_enabled (enum debug_counter index) |
| { |
| return count[index] <= limit[index]; |
| } |
| |
| bool |
| dbg_cnt (enum debug_counter index) |
| { |
| count[index]++; |
| if (dump_file && count[index] == limit[index]) |
| fprintf (dump_file, "***dbgcnt: limit reached for %s.***\n", |
| map[index].name); |
| |
| return dbg_cnt_is_enabled (index); |
| } |
| |
| |
| static void |
| dbg_cnt_set_limit_by_index (enum debug_counter index, int value) |
| { |
| limit[index] = value; |
| |
| fprintf (stderr, "dbg_cnt '%s' set to %d\n", map[index].name, value); |
| } |
| |
| static bool |
| dbg_cnt_set_limit_by_name (const char *name, int len, int value) |
| { |
| int i; |
| for (i = debug_counter_number_of_counters - 1; i >= 0; i--) |
| if (strncmp (map[i].name, name, len) == 0 |
| && map[i].name[len] == '\0') |
| break; |
| |
| if (i < 0) |
| return false; |
| |
| dbg_cnt_set_limit_by_index ((enum debug_counter) i, value); |
| return true; |
| } |
| |
| |
| /* Process a single "name:value" pair. |
| Returns NULL if there's no valid pair is found. |
| Otherwise returns a pointer to the end of the pair. */ |
| |
| static const char * |
| dbg_cnt_process_single_pair (const char *arg) |
| { |
| const char *colon = strchr (arg, ':'); |
| char *endptr = NULL; |
| int value; |
| |
| if (colon == NULL) |
| return NULL; |
| |
| value = strtol (colon + 1, &endptr, 10); |
| |
| if (endptr != NULL && endptr != colon + 1 |
| && dbg_cnt_set_limit_by_name (arg, colon - arg, value)) |
| return endptr; |
| |
| return NULL; |
| } |
| |
| void |
| dbg_cnt_process_opt (const char *arg) |
| { |
| const char *start = arg; |
| const char *next; |
| do { |
| next = dbg_cnt_process_single_pair (arg); |
| if (next == NULL) |
| break; |
| } while (*next == ',' && (arg = next + 1)); |
| |
| if (next == NULL || *next != 0) |
| { |
| char *buffer = XALLOCAVEC (char, arg - start + 2); |
| sprintf (buffer, "%*c", (int)(1 + (arg - start)), '^'); |
| error ("cannot find a valid counter:value pair:"); |
| error ("-fdbg-cnt=%s", start); |
| error (" %s", buffer); |
| } |
| } |
| |
| /* Print name, limit and count of all counters. */ |
| |
| void |
| dbg_cnt_list_all_counters (void) |
| { |
| int i; |
| printf (" %-30s %-5s %-5s\n", "counter name", "limit", "value"); |
| printf ("----------------------------------------------\n"); |
| for (i = 0; i < debug_counter_number_of_counters; i++) |
| printf (" %-30s %5d %5u\n", |
| map[i].name, limit[map[i].counter], count[map[i].counter]); |
| printf ("\n"); |
| } |